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 * Boost Software License - Version 1.0 - August 17th, 2003
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/********************************************************************************************************
 * @file        TLE926x_SPI.c
 *
 * @brief       Implementation of all SPI related functions
 *
 * @version     V1.0.0
 * @date
 * @author      Fedy Farhat
 * @author      Michael Schaffarczyk
 ********************************************************************************************************/

/* ================================================================================ */
/* ============================   HEADER FILES     ================================ */
/* ================================================================================ */

#include <tle926x/TLE926x_SPI.h>

/* ================================================================================ */
/* =======================   SPI communication functions     ====================== */
/* ================================================================================ */

/*RDK4 Platform Global Variables*/
cyhal_spi_t rdk4_spi_obj;

/* Initialize the SPI Interface */
uint8_t sbc_spi_init(void)
{
	cy_rslt_t result = CY_RSLT_SUCCESS;

	/*SPI Initialization*/
	result = cyhal_spi_init(
			&RDK4_SPI_HANDLE,
			RDK4_SPI_MOSI,
			RDK4_SPI_MISO,
			RDK4_SPI_CLK,
			RDK4_SPI_CS,
			NULL,
			8,
			CYHAL_SPI_MODE_01_LSB,
			false);
    if(result != CY_RSLT_SUCCESS)
    {
  	  return 1;
    }

    result = cyhal_spi_set_frequency(&RDK4_SPI_HANDLE, RDK4_SPI_FREQ);
    if(result != CY_RSLT_SUCCESS)
    {
    	return 1;
    }

	return 0;
}

/*The SPI transfer function*/
uint16_t SBC_SPI_TRANSFER16(uint8_t Upper, uint8_t Lower)
{
	uint8_t spi_rx[2] = {0};
	uint8_t spi_tx[2];

	spi_tx[0] = Upper;
	spi_tx[1] = Lower;

	cyhal_spi_transfer(&RDK4_SPI_HANDLE, spi_tx, 2, spi_rx, 2, 0x00);

	return (uint16_t)(spi_rx[0]<<8 | spi_rx[1]);
}
